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John Franklyn Mars

American businessman

WyomingDiversified

AIProfile Summary

John Franklyn Mars (born 1935) is an American businessman from the United States with an estimated net worth of ~$23.9B. Wikidata

Philanthropy

ProPublica-reported Form 990 filings show multiple entities named Mars Foundation and Mars Wrigley Foundation. In 2023, Mars Foundation (NY) reported total assets of $1,867,388 and grants paid of $0, and Mars Wrigley Foundation (DE) reported total assets of $39,439,346 and grants paid of $0. Across the listed foundations, total reported foundation assets were $41,306,734 and total grants paid were $0. ProPublica 990

AI-generated summary from wikidata, propublica_990 3/10/2026 (gpt-5.2). All claims are derived from the source data shown below.

USU.S. Presence

otherU.S. economic presence

990Philanthropy

$41.3MFoundation Assets
$6.3MGrants Paid
3Foundations
Mars FoundationMonsey, NY
Philanthropy, voluntarism & grantmaking (IRS NTEE T90)
Assets: $1.9MRevenue: $123KGrants: $946KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Mars FoundationHouston, TX
Human services (IRS NTEE P20)
Assets: $0Revenue: $0Grants: $0
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Mars Wrigley FoundationWilmington, DE
Assets: $39.4MRevenue: $3.4MGrants: $5.4MTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Source: ProPublica (990) annual filing · latest on record (retrieved 3/9/2026) (proPublica_990)

PBSScore Breakdown

D
29.6
Public Benefit Score

The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.

Philanthropy65% weight
12%

Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).

Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry

Transparency35% weight
63%

How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.

Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata

Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency

Scored on 6/23/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.

All data is sourced from public records. Each section links to its original source. View on Wikidata

John Franklyn Mars — Public Benefit Score D (30) | Billionaire Army